Oregon Department of Transportation Peregrine Falcon Management Plan 2002-2007 Prepared By: Environmental Services 1158 Chemeketa St. SE Salem, OR 97301 TABLE OF CONTENTS Page 1.0 INTRODUCTION.............................................................................................................................................................1 1.1 OVERVIEW....................................................................................................................................................................... 1 1.2 STATUS OF PEREGRINE FALCON................................................................................................................................... 1 1.3 PURPOSE OF THIS MANAGEMENT PLAN...................................................................................................................... 2 1.4 MANAGEMENT PLAN OBJECTIVES............................................................................................................................... 4 1.5 MANAGEMENT PLAN DEVELOPMENT .......................................................................................................................... 5 2.0 PEREGRINE FALCON ECOLOGY...........................................................................................................................6 2.1 LIFE HISTORY.................................................................................................................................................................. 6 2.2 NESTING CHRONOLOGY................................................................................................................................................. 7 2.3 URBAN HABITAT ............................................................................................................................................................ 8 2.4 DISTURBANCE IMPACTS............................................................................................................................................... 11 3.0 CONSERVATION METHODS...................................................................................................................................12 3.1 PAST CONSERVATION MEASURES.............................................................................................................................. 12 3.2 MANAGEMENT ZONES.................................................................................................................................................. 13 3.3 GENERAL BEST MANAGEMENT PRACTICES.............................................................................................................. 15 4.0 IMPLEMENTATION PLAN.......................................................................................................................................19 4.1 COMMUNICATION......................................................................................................................................................... 19 4.2 MONITORING................................................................................................................................................................. 19 4.3 REPORTING AND ADAPTIVE MANAGEMENT ............................................................................................................. 20 4.4 INTERNAL REVIEWS AND TRAINING.......................................................................................................................... 21 5.0 SITE-SPECIFIC MANAGEMENT............................................................................................................................21 5.1 FREMONT BRIDGE......................................................................................................................................................... 22 5.1.1 Baseline Conditions............................................................................................................................................ 22 5.1.2 Management Zones for Fremont Bridge ......................................................................................................... 23 5.1.3 Past Disturbances at the Fremont Bridge........................................................................................................ 23 5.1.4 Potential Impacts from Maintenance and Construction Activities ............................................................. 23 5.1.5 Monitoring at the Fremont Bridge.................................................................................................................... 24 5.2 ST. JOHNS BRIDGE ........................................................................................................................................................ 25 5.2.1 Baseline Conditions............................................................................................................................................ 25 5.2.2 Management Zones for St. Johns Bridge ........................................................................................................ 26 5.2.3 Past Disturbances at the St. Johns Bridge....................................................................................................... 26 5.2.4 Potential Impacts from Future Maintenance Activities ................................................................................ 26 5.2.5 Potential Impacts from Future Construction Activities ................................................................................ 27 5.2.6 Monitoring at the St. Johns Bridge................................................................................................................... 28 5.3 I-205 (ABERNETHY) BRIDGE ...................................................................................................................................... 28 5.3.1 Baseline Conditions............................................................................................................................................ 28 5.3.2 Management Zones for Abernethy Bridge...................................................................................................... 29 5.3.3 Past Disturbance at the Abernethy Bridge...................................................................................................... 29 5.3.4 Potential Impacts from Maintenance Activities............................................................................................. 30 5.3.5 Potential Impacts From Future Construction Activities ............................................................................... 31 5.3.6 Monitoring at the Abernethy Bridge................................................................................................................ 31 5.4 INTERSTATE (COLUMBIA RIVER) BRIDGE................................................................................................................. 32 5.4.1 Baseline Conditions............................................................................................................................................ 32 5.4.2 Management Zones for Interstate Bridge........................................................................................................ 33 5.4.3 Past Disturbance at the Interstate Bridge ........................................................................................................ 33 5.4.4 Potential Impacts from Maintenance Activities............................................................................................. 34 5.4.5 Potential Impacts from Future Construction Activities ................................................................................ 35 5.4.6 Monitoring at the Interstate Bridge.................................................................................................................. 36 ODOT Peregrine Falcon Management Plan (Abbreviated) ii 6.0 OVERALL IMPACTS ...................................................................................................................................................36 7.0 NEST MANAGEMENT.................................................................................................................................................37 7.1 NEST EXCLUSION.......................................................................................................................................................... 38 7.2 NEST MANIPULATION .................................................................................................................................................. 38 8.0 REFERENCES .................................................................................................................................................................39 LIST OF FIGURES Page Figure 1. Portland Area Bridges Managed by ODOT with Peregrine Falcon Nests ........................Not Included Figure 2. Photographs of Peregrine Falcons .................................................................................Not Included Figure 3. Implementation of Best Management Practices and Coordination................................................... 18 LIST OF TABLES Page Table 1. Ownership of Columbia River Bridges...........................................................................................3 Table 2 General Nest Chronology for Peregrine Falcons in the Portland Metropolitan Area...........................7 Table 3 Summary of Productivity of Portland Bridges Peregrine Nesting Sites Since 1994. ......................... 10 Cover Photographs: Historic Columbia River Highway